Automatic slide-lever cylinder-cock.



A. V. POLLMILLER. AUTOMATIC SLIDE LEVER GYLINDBR cook'.

APPLIOATION FILED SERT. 30, 1911. Patented Apr. 2, 1.012.

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EZ@ /N Q *E R N \k uu-ntoz n Cock;` and I do hereby declare the follow` AUGUST ir. Porra/Linnen,l or roRTivrAnis'oN, IOWA.

AUToivi-ATIC sLIDEeLEVER 'CYLINDEmotion.v

Specification of Letters Patent.v Pntentcd Apr. 2,1912

Application mea september 30,1911'. serial Na. '652,036.

To all whom it maal concern: v

Be it known that I, AUGUST V..PoLL

Minnen, a citizen of the United States, re-

siding at Fort Madison, in the county of -Leeand State of Iowa, have invented a new and useful Automatic Slidediever Cylindering to be a' full, clear, and exact `description of the invention, .such las will enable others skilled in 'the art towhich it apperta-'ins to4 make and use the same. This `invention relates to a new a'nduseful automatic sli-de lever cylinder cock.

The `main object `of the invention 1s to provide novel means for taking care0f 'the l `exhaust steam from the cylinder.

A further object of the invention is thef provision .of a slide lever operated by a valve motion gearing (not shown) 'for oper ating the valve cocks, to permit the kexhaust of the steam. `on one side and then theother of the piston shown in dotted lines -in the cylinder.

A feature of the invention is the' .provision ot means arranged 1n the cylinder cocks for cat-ching foreign matter or objects, as

, the steam exhausts.

-The drawings disclose only one form ofv the invention, but in practical fields t-his form may requirealterations, to which the applicant is entitled, provided the alterationsare comprehended within the scopeof what is claimed. l

The invention comprises further features and `combinations of parts, as hereinafter set forth, shown in the drawings and claimed.

In ythe drawings Figure 1 is a View in elevation, showing the application of the cylinder cocks,as applied to a cylinder. Fig. 2is a similar View partly in section, showing the interior structure of the Valve cocl s.` Fig. 3 isA a sectional View on line 3-3 of Fig. 2. Fig. 4 isasectional View on line 4 4 of Fig. 2.y

Referring more especiallyjto the, drawings, 1 designates the cylinder having the usual piston (shown in dotted lines), which is designated by the character `2. Threadedinto the' cylinder 1 are two casings, 1a. The ends 3 of the casings are in-teriorly threaded, as shown at 3a. The steam is adapted to exhaust, first through.V one casing and then the other at the points a. As theexhaust steam and water exhaust, the foreign matter is strained by t-he screen members 6 and 7.

The water isv strained bythe screen -6, and passes through the `duct 8:01? the casings, while the steam passes through the duct 9, so as to" be strained "by the screen 7. f The 'screen'niember G is in the "form of a cylindrical shell, while the screen Tis inthe form of a meshwork pla-te. l The cylindrical shells .are perforated, as shown. f

y Engaging the threads `3a ofthe casings 1a are exteriorly threaded restricted portions 11' of 'the casings 12. The restricted por# t'io'ns 11, vvare provide-dwith valve seats 13, with which the winged valves 14 coperate. One end -of each ofthe valve members 14 is provided `with a reduced tl'ireaded end,

wl'iich is threaded-into the disk member 15,

as shown at 1G. The disk members 15 are A vprovided with hexagonal ,shaped heads '17,

while the ends of the valve members 14 are formed with 'rectangular heads 18. `By ythese heads, the disk members 15 and. the W vali/'e members `14 may be connected together, as at 16, by the threads. Interposed between the disk members and interior' annular shoulders ofthe casings 12` are coll springs 119, w1hich serve to hold the Valvev -i members 14cm Contact with their seats 13'.

lhreadedinto the ducts 9 are plugs 20, in which the pipes A20jare threaded. The

ends 2Ob of the p1pes20a are threaded into v' the plugs 20,`which`are threaded'into the c'asings 12. In this manner,`V theexhaust steam passes from first one and then the other of the ducts 9 through first one and then the other of the pipes 20a, into rst one and then the other of the casings 12, so as to raise the respective valve member 15'. When the valve members 15 are raised, the valve members 14 are unseated, against the action of the springs 19, so' as to permit the water which 'is strained by the screens 6 to pass into the casings 12, between the 'valve members 14 and the `valve members 15. This water between the yalye members 14 and the valve members-15 is'carried olf by way of the pipes 21, into any suitable drip pan, not shown. The steamwhich-passes through the pipes 20 into the casings 12 in the 're'ar or behind 'the valve members 15 condenses finally, lbetv've'en the `valve members 15 .and the'valves 24. The Valve n'ein- The other ends of the casings 25 are threaded into the casings 12, as `shown at 29. The casings 25 are rovided with spider members 30, which limit the valves 24 in their movements. After the steam between the Valve members 15 andthe valve members 24 condenses, the same may be drawn oft' by unseating the valves 24. The

A valves-24 are unseated alternately by means of the slide lever 31, which is adapted to be operated by the valve motion gearing (not shown). The slide lever passes through the casings 26 and operates upon the pins 31a. This slide lever is provided at each end with cam portions which engage the frictional members 31", which are carried by the valve members 24. These cam portions are reversed in position, so as to alternately raise the valves' 24 as the slide lever moves.

The invention having been set forth, what is claimed as new and useful is 1. In combination, a main cylinder, al pair of cylinder cocks connected to the eX- haust ports of the main cylinder, the cylinder cocks comprising f casings, normally seated valve operated disks arranged in the casings, a water chamber between the valve and the disk'crossing pipes connecting the casings below the disks, the casings having main passage ways and provided with branch passage Ways, tubular members having a perforated portion extending on an inclination through the branch passage ways with the perforated portions arranged in the main passage ways, screw4 nuts, one

threaded to one end of each of the pipes,

and threaded into each of the branch passage ways, thus connecting the pipes lto the valve operated branch passage ways, and screen members arranged between the tubular members and the-screw nuts.

2. In combination, a main cylinder, a pair of cylinder cocks' connected to the exhaust ports of the main cylinder, the cylinder cocks comprisin casings, normally seated cgiiskmarranged in the casings, a water chamber between the valve and the disk crossing pi es connecting the casings below the dis s, the casings having main passage ways and provided with branch passage ways, tubular members having a perforated portion extending on an inclination through the branch passage ways with the perforated portions arranged in the main passage ways, screw nuts, one threaded toone end of each of the pipes, and threaded into each of the branch passage ways, thus connectingthe pipes to the branch passage Y ways, and screen members arranged between the tubular members and the screw nuts, the casings terminating in extension casings beyond the disks, valves arranged in the extension casings, the last namedvalves having stems providedwith anti-frictional means, the extension casings having guides, and a slide lever operable through the guides' having inclined cammed portions to cooperate with the antifrictional means for raising the last named valve.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

AUGUST V. POLLMILLER. Witnesses:

OMAR E. HERMINGHUSEN, ALICE HYDE.

Copies of this patent may nel obtained for ve cents each, by addressing the "Commissioner of Patenti,

Washington, D. C. 

